CK12 - Geometry

are parallel.

2.

slopeof

and are the bases, is an altitude.

4. For a parallelogram, = (the “bases”are two of the parallelsides),so by the trapezoidformula
   the area is


5. Lengthof long diagonalof one rhombusis. Lengthof otherdiagonalis (eachrhombusis made

of right triangles).

Total area is

6. Manyrhombiwork,as long as the productof the lengthsof the diagonalsis.

7.

8. squarefeet


9. squarefeet

10.

Areasof SimilarPolygons

LearningObjectives

• Understandthe relationshipbetweenthe scalefactorof similarpolygonsand their areas.


• Applyscalefactorsto solveproblemsaboutareasof similarpolygons.